· Private foundation
Jack's Foundation Inc
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k2 grants · $13k
- $10k–50k10 grants · $250k
- $50k–250k5 grants · $425k
- $250k+1 grant · $450k
| Recipient | Amount |
|---|---|
| HARBOR COUNTRY DAY SCHOOL | $450,000 |
| NATIONAL TRUST FOR HISTORIC | $125,000 |
| THE BOWERY MISSION | $100,000 |
| THE POLISH MUSEUM OF AMERICA | $100,000 |
| WEILL CORNELL MEDICAL CENTER | $50,000 |
| WESTMINSTER SCHOOL | $50,000 |
| LONG ISLAND CARES | $40,000 |
| THE VANDERBILT MUSEUM | $40,000 |
| HELPING HANDS RESCUE MISSION | $40,000 |
| LITTLE SHELTER ANIMAL RESCUE | $30,000 |
| SAVE THE SOUND | $30,000 |
| Individual grant recipient | $25,000 |
| OLD WESTBURY GARDENS | $15,000 |
| DOCTORS WITHOUT BORDERS | $10,000 |
| AMERICARES | $10,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY19–25, $85k) land where the poverty rate runs at 9%, against an area that typically sits at 8%. 24% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
21 repeat relationships — 16 still active in FY2025, 5 since wound down; 2 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 95% of grant dollars renewed an existing relationship; $58k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- HCHARBOR COUNTRY DAY SCHOOL8× · 2017–2025 · $2.0M · revenue +116%
- PMPolish Museum of America6× · 2020–2025 · $535k · revenue +23%
- TOTRUSTEES OF WESTMINSTER SCHOOL INC5× · 2020–2025 · $410k · revenue +32%
Funded once
- DRDurango Railroad Historical Societyone grant, 2023 · $75k · revenue -75% · 42% of their budget
- IGIndividual grant recipientone grant, 2024 · $25k
- FFFRIENDS FOR THE ISRAELI DEFENSEone grant, 2024 · $10k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
To serve the people of the Saratoga region by providing them access to excellence in healthcare in a supportive and caring environment.
Wamc is chartered by the new york state board of regents to "furnish, prepare and present non-profit and non-commercial educational, instructional and cultural radio programs and also non-profit and non-commercial programs (wamc's mission…
To provide accountable, responsive quality care with the highest degree of sensitivity to the needs of our diverse, multilingual population while fulfilling the professional and educational needs of our members.
For reference, the grantee most central to the portfolio’s shape is Wounded Warrior Project Inc and the most unlike its peers is Durango Railroad Historical Society. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
17 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 17 of the 29 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds HARBOR COUNTRY DAY SCHOOL ↗
- Who funds Polish Museum of America ↗
- Who funds TRUSTEES OF WESTMINSTER SCHOOL INC ↗
- Who funds Christian Herald Association Inc ↗
- Who funds Old Westbury Gardens Inc ↗
- Who funds THE KOSCIUSZKO FOUNDATION INC ↗
- Who funds SAVE THE SOUND ↗
- Who funds FARM SANCTUARY INC ↗
- Who funds Durango Railroad Historical Society ↗
- Who funds Long Island Cares Inc ↗
- Who funds SACRED HEART UNIVERSITY INCORPORATED ↗
- Who funds New York City Rescue Mission ↗
- Who funds AMERICARES FOUNDATION INC ↗
- Who funds WOUNDED WARRIOR PROJECT INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds THE CARNEGIE HALL CORPORATION ↗
- Who funds PAWS FOR PURPLE HEARTS ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Jack's Foundation Inc funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.
- Save the Sound — 20% of income from government
- Sacred Heart University Incorporated — 1% of income from government
- Americares Foundation Inc — 0% of income from government
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Jack's Foundation Inc?
Find your warmest path to Jack's Foundation Inc through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.